"Finn, pass me the last part of the serum, please."
Finn sighed as he passed Princess Bubblegum the test tube. Usually, Princess Bubblegum's science was fun, but today she was taking way longer than she promised.
"What's it even supposed to be, PB?" Finn groaned.
"If my calculations are correct, it should harvest energy from the sun to power all the lights in the Candy Kingdom! "
He laid back and groaned again. "Can you please hurry up? I'm super bored."
"It's complete!"
Finn squealed in delight as he jumped up from his seat "Awwyeah! Let's see it!"
Princess Bubblegum and Finn stood back a few feet as the serum started to bubble and fizz.
"It's working!" the Princess smiled, secretly proud of herself. Finally, a new power solution. Or at least she thought. The beaker exploded, covering Finn and PB with sticky goo.
"Ugh, gross!" Finn looked down at his soiled clothes
"Finn!" the Princess cried "Look at what it created!"
With a gaping mouth, Finn stood and stared at a huge black portal, sucking in random objects. He grabbed Bubblegum and held onto a vine-covered pillar. Screaming and holding on for his dear life, he squeezed his eyes tightly as the portal tore apart the palace. Suddenly, it stopped, and the room collapsed.
Finn was knocked out cold. After a minute, he regained his conscious. Dizzy with a headache, he then sees a vague silhouette of a girl with... bunny ears? Finn looked up, confused, and sees something that leaves him speechless.
It was a girl, about his age. She had blonde bangs, a bunny hat, and... looked exactly like him.
"Who are you?" She inquired